Shareholders' Equity - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Oct. 01, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	$ 7,113	$ 6,815
Other comprehensive loss before reclassifications	(20)	(205)
Reclassified from Accumulated other comprehensive loss	4	52
Balance at end of period	7,067	6,762
Accumulated Other Comprehensive Loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(612)	(789)
Balance at end of period	(628)	(942)
Pension and Postretirement Benefits Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(516)	(799)
Other comprehensive loss before reclassifications	0	0
Reclassified from Accumulated other comprehensive loss	0	52
Balance at end of period	(516)	(747)
Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(94)	9
Other comprehensive loss before reclassifications	(19)	(201)
Reclassified from Accumulated other comprehensive loss	0	0
Balance at end of period	(113)	(192)
Deferred Gains (Losses) on Hedge Contracts
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(2)	1
Other comprehensive loss before reclassifications	(1)	(4)
Reclassified from Accumulated other comprehensive loss	4	0
Balance at end of period	$ 1	$ (3)